Cherry - I've used cherry sawdust for block cultivation and it seems fine. Maybe it's a little more prone to contamination, or maybe that's me, I'm not sure. As far as using logs, cherry is quite dense. It may be too much for shiitake. Lion's mane can handle cherry and other super dense hardwoods like walnut.
- from http://www.shroomery.org/forums/showflat.php/Cat/0/Number/9807216

Apple - Morel
- from http://mushroomobserver.org/21010
Dave from NE PA
My own experience with orchard morels is that during some good years a few come out around healthy-looking apple trees. When the tree dies, larger numbers of larger morels fruit nearby the same tree; even if morel friendly weather conditions are marginal. To me this suggests that the morchella organism has been coexisting with the live apple tree. When the tree dies, the fungus then taps whatever nutrition is available in the dying roots. Orchard morels in my area do not spread to nearby morel friendly environments. One orchard I hunt is full of White Ash and Yellow Poplar, but morels appear only by the apple trees. When a tree has been dead for 4 years and there are no other apple trees nearby, no more morels appear in that area.

Apple - possibly Russula specieshttp://forum.terrorchid.org/viewtopic.php?p=9471
"nigritellanigra.
Location: Bila Tserkva, Ukraine
I wonder if it is possible to cultivate Russula just like itself. In the Ukraine I do cultivate a few mushroom species, which we eat. I must say, that for a few species I did use an old apple tree to thrive on in our fruitgarden of our Dacha. However the spores I did get from mushrooms from pineforests."

Apple - Pleurotus dryinus (Veiled Oyster)
Grows on living trees.
-from http://mushroomobserver.org/81264?q=uzqV
The presence of a veil as well as it’s occurring singly on a living tree is consistent my understanding of this species. In northern California I have most often seen it growing on Madrone trees, but I expect it’s pretty opportunistic.

Madrona - Leccinum manzanitae, commonly known as the manzanita bolete for its usual mycorrhizal association with manzanita trees. Its fruit bodies grow singly to scattered in soil under madrone and manzanita.
- from http://en.wikipedia.org/wiki/Leccinum_manzanitae

Maple - Morchella esculenta (Yellow Morel)
Upper canopy is mostly Doug fir but these vine maples beneath in the lower canopy seem to be a desirable environment for this particular Morchella strain. In Eastern Washington we find Morchella esculenta in true pine canopies associated with small maple saplings in the lower forest floor as well.
- from http://mushroomobserver.org/65873?q=smLv

Around recently poured cement (not a tree!) - Morchella esculenta (Yellow Morel)
Lots of construction from last year on this road prompted these ascomycetes to float on the scene- all it took was a good 10 degree temp boost and some lamp posts for added nightly heat I think :) Found beneath lamp posts for three city blocks in gravel.
- from http://mushroomobserver.org/65873?q=smLv

Pine Needle Duff - http://www.shroomery.org/forums/showflat.php/Number/17424492
"In my experience, lepista nuda (Blewit Mushrooms) love thick blankets of pine needles, so if you have any pines around that drop their needles and don't get raked clean just pour/spray it (a slurry of fermented stem butts and molasses) all over the duff."